CN118391667A - Circulating fluidized bed boiler for biological fuel - Google Patents
Circulating fluidized bed boiler for biological fuel Download PDFInfo
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- CN118391667A CN118391667A CN202410682952.XA CN202410682952A CN118391667A CN 118391667 A CN118391667 A CN 118391667A CN 202410682952 A CN202410682952 A CN 202410682952A CN 118391667 A CN118391667 A CN 118391667A
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- ring
- filter cover
- fluidized bed
- filter
- circulating fluidized
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- 239000000446 fuel Substances 0.000 title description 6
- 238000007789 sealing Methods 0.000 claims abstract description 49
- 239000002551 biofuel Substances 0.000 claims abstract description 18
- 238000003825 pressing Methods 0.000 claims description 29
- 238000001125 extrusion Methods 0.000 claims description 23
- 239000007788 liquid Substances 0.000 claims description 19
- 230000000903 blocking effect Effects 0.000 claims description 10
- 238000000926 separation method Methods 0.000 claims description 9
- XLYOFNOQVPJJNP-UHFFFAOYSA-N water Substances O XLYOFNOQVPJJNP-UHFFFAOYSA-N 0.000 claims description 6
- 238000007599 discharging Methods 0.000 abstract description 3
- 239000002956 ash Substances 0.000 description 83
- 239000003245 coal Substances 0.000 description 9
- 238000000034 method Methods 0.000 description 8
- 230000005484 gravity Effects 0.000 description 7
- 238000009434 installation Methods 0.000 description 7
- 238000002485 combustion reaction Methods 0.000 description 6
- 238000005192 partition Methods 0.000 description 4
- 239000002028 Biomass Substances 0.000 description 3
- 230000006978 adaptation Effects 0.000 description 3
- 238000010586 diagram Methods 0.000 description 3
- 239000012528 membrane Substances 0.000 description 3
- 238000001816 cooling Methods 0.000 description 2
- 238000001914 filtration Methods 0.000 description 2
- 238000010438 heat treatment Methods 0.000 description 2
- 229910052708 sodium Inorganic materials 0.000 description 2
- 239000011734 sodium Substances 0.000 description 2
- 238000000638 solvent extraction Methods 0.000 description 2
- DGAQECJNVWCQMB-PUAWFVPOSA-M Ilexoside XXIX Chemical compound C[C@@H]1CC[C@@]2(CC[C@@]3(C(=CC[C@H]4[C@]3(CC[C@@H]5[C@@]4(CC[C@@H](C5(C)C)OS(=O)(=O)[O-])C)C)[C@@H]2[C@]1(C)O)C)C(=O)O[C@H]6[C@@H]([C@H]([C@@H]([C@H](O6)CO)O)O)O.[Na+] DGAQECJNVWCQMB-PUAWFVPOSA-M 0.000 description 1
- 229910052783 alkali metal Inorganic materials 0.000 description 1
- 150000001340 alkali metals Chemical class 0.000 description 1
- 238000010009 beating Methods 0.000 description 1
- 230000009286 beneficial effect Effects 0.000 description 1
- 238000005516 engineering process Methods 0.000 description 1
- 230000007613 environmental effect Effects 0.000 description 1
- 238000004880 explosion Methods 0.000 description 1
- 239000010881 fly ash Substances 0.000 description 1
- 230000002452 interceptive effect Effects 0.000 description 1
- 238000012986 modification Methods 0.000 description 1
- 230000004048 modification Effects 0.000 description 1
- 125000006850 spacer group Chemical group 0.000 description 1
- 239000010902 straw Substances 0.000 description 1
- 238000009736 wetting Methods 0.000 description 1
Landscapes
- Gasification And Melting Of Waste (AREA)
Abstract
The invention relates to the technical field of circulating fluidized bed boilers, in particular to a circulating fluidized bed boiler of biofuel, which comprises a separator, wherein the separator is provided with: the filter assembly comprises a first filter cover, a second filter cover and a knocking block, wherein the first filter cover and the second filter cover are fixedly arranged on an exhaust pipe of the separator, the second filter cover is positioned inside the first filter cover, and the knocking block is movably arranged on the exhaust pipe. According to the circulating fluidized bed boiler for the biofuel, provided by the invention, the first filter cover and the second filter cover are matched to filter plant ash in hot air, the knocking blocks knock the first filter cover and the second filter cover to shake the plant ash on the first filter cover and the second filter cover away, so that the filter holes on the first filter cover and the second filter cover are prevented from being blocked, the bottom of the first filter cover is opened after a period of operation, the plant ash between the first filter cover and the second filter cover is discharged, the lower sealing plate rotates relative to the upper sealing plate, and the plant ash in the ash discharging pipe can pass through the notch on the upper sealing plate to continuously move downwards along the ash discharging pipe.
Description
Technical Field
The invention relates to the technical field of circulating fluidized bed boilers, in particular to a circulating fluidized bed boiler of biofuel.
Background
The circulating fluidized bed boiler is a boiler device based on clean coal burning technology, and the circulating fluidized bed boiler system generally comprises a fluidized bed combustion chamber (hearth), a circulating ash separator, a fly ash returning device, a tail heating surface, auxiliary equipment and the like.
According to publication No. CN202938288U, publication No. 2013.05.15 discloses a circulating fluidized bed boiler applied to high sodium coal and biofuel, comprising a water cooling air chamber surrounded by a membrane water wall, a feeding port, a hearth surrounded by a membrane water wall, a screen heat exchange surface formed by a membrane wall, a cyclone separator and a vertical air flue communicated with the upper part of the cyclone separator, wherein the heat exchange surface of the air flue is formed by an air cooling package wall, a transverse horizontal flue is arranged at the downstream of the air flue, and a low-temperature-level convection heat exchange surface, a coal economizer heat exchange surface and an air preheater are sequentially arranged in the horizontal flue to be heated. The device solves the problem of pollution and adhesion of high-sodium coal on a convection heating surface at the tail part, and certain coal types with strong pollution tendency are low in price, such as Xinjiang eastern coal with high alkali metal content, so that the Xinjiang eastern coal can be effectively utilized by the circulating fluidized bed boiler, the problem of concern of the coal types with strong pollution tendency for the combustion of a power plant is solved, the economic benefit of the power plant is improved, the exploitation, sales and electric power development of the coal are promoted, and the market application prospect is wide.
In the prior art including the above patents, the biofuel is a common renewable fuel, and the most common biofuel is straw, corncob, etc. In order to improve economic benefit and environmental protection, the biofuel can also be used as the fuel of the circulating fluidized bed boiler, but the biofuel burns very rapidly in the circulating fluidized bed boiler, and a large amount of plant ash can be left after the biofuel burns, and the mixed hot gas of the plant ash flows in the circulating fluidized bed boiler, and most separators in the traditional circulating fluidized bed boiler system are cyclone separators.
Disclosure of Invention
The invention aims to provide a circulating fluidized bed boiler of biofuel, and aims to solve the problem that plant ash generated by burning the biofuel is difficult to separate from hot gas by separation equipment of the traditional circulating fluidized bed boiler.
In order to achieve the above object, the present invention provides a circulating fluidized bed boiler for biofuel, comprising a separator provided with:
The filter assembly comprises a first filter cover, a second filter cover and a knocking block, wherein the first filter cover and the second filter cover are fixedly arranged on an exhaust pipe of the separator, the second filter cover is positioned in the first filter cover, the knocking block is movably arranged on the exhaust pipe, and the knocking block moves to intermittently collide the first filter cover and the second filter cover and intermittently open the bottom of the first filter cover;
The upper sealing plate is fixedly arranged on the ash discharge pipe of the separator, a lower sealing plate is rotatably arranged on the upper sealing plate, and the lower sealing plate rotates relative to the upper sealing plate so that the ash discharge pipe is intermittently opened.
Preferably, the second filter cover is rotatably provided with a shaft lever, the shaft lever is provided with a supporting ring for supporting the knocking block, and the shaft lever rotates to enable the knocking block to collide with the first filter cover and the second filter cover.
Preferably, the bottom of the first filter cover is provided with a receiving ring, the receiving ring is provided with a receiving groove for receiving plant ash, and the bottom of the receiving ring is movably provided with a bottom plate for blocking the bottom of the receiving groove.
Preferably, the supporting ring is movably provided with a squeezing ring, and the supporting ring rotates to enable the squeezing ring to reciprocate in the vertical direction and squeeze plant ash in the storage groove.
Preferably, an impeller for driving the shaft rod to rotate is arranged in the exhaust pipe, a driving cylinder for driving the extrusion ring to move is movably arranged on the impeller, and the impeller rotates to enable the driving cylinder to reciprocate in the vertical direction.
Preferably, the receiving ring is provided with a liquid outlet for water to flow out, and the extruding ring moves downwards so that the opening of the liquid outlet is enlarged.
Preferably, a group of movable sheets extending inwards and a group of movable sheets extending outwards are respectively arranged on the inner wall and the outer wall of the extrusion ring, and the two groups of movable sheets are distributed in a staggered manner in the vertical direction.
Preferably, the receiving ring is provided with a partition bar for partitioning the storage groove, and the pressing ring moves down to move the partition bar and move the bottom plate after moving to a predetermined position.
Preferably, the bearing ring is provided with a driving ring for driving the bottom plate to move, the separation strip is provided with a plugging ring for plugging the liquid outlet, and the plugging ring is provided with a pressing block for pushing the driving ring to rotate.
Preferably, the driving ring is provided with a wedge block matched with the pressing block, and the driving ring is provided with an arc-shaped fixing piece for locking the driving ring on the bearing ring.
In the technical scheme, the circulating fluidized bed boiler for the biofuel provided by the invention has the following beneficial effects: when the biomass ash separator works, the biomass fuel combusts in the combustion chamber to generate hot air, the hot air enters the separator from the air inlet pipe of the separator, the hot air flows downwards along the inner wall of the separator in a spiral manner, plant ash with larger mass in the hot air moves downwards under the action of gravity and gradually falls into the ash discharge pipe, at the moment, the upper sealing plate and the lower sealing plate in the ash discharge pipe are matched to seal the ash discharge pipe, the hot air flowing in the separator is prevented from disturbing the air inside the ash discharge pipe, the hot air flows upwards from the middle part of the separator after the plant ash with larger mass is thrown out, the hot air passes through the first filter cover and the second filter cover, the first filter cover and the second filter cover are matched to filter the plant ash in the hot air, meanwhile, the beating blocks beat the first filter cover and the second filter cover, the plant ash on the first filter cover and the second filter cover are prevented from being buffed, the filter holes on the first filter cover and the second filter cover are prevented from being blocked, after the work, the plant ash between the first filter cover and the second filter cover is prevented from being discharged, and the plant ash in the ash discharge pipe can be continuously moved along the upper sealing plate and the ash discharge pipe for a period of time after the work.
Drawings
In order to more clearly illustrate the embodiments of the present application or the technical solutions in the prior art, the drawings required for the embodiments will be briefly described below, and it is apparent that the drawings in the following description are only some embodiments described in the present application, and other drawings may be obtained according to these drawings for a person having ordinary skill in the art.
FIG. 1 is a schematic diagram of the overall structure provided by an embodiment of the present invention;
fig. 2 is a schematic structural view of an upper sealing plate according to an embodiment of the present invention;
FIG. 3 is a schematic diagram of an explosion structure according to an embodiment of the present invention;
FIG. 4 is an enlarged view of FIG. 3 at A;
FIG. 5 is an enlarged view of FIG. 3 at B;
FIG. 6 is an enlarged view of FIG. 3 at C;
FIG. 7 is a schematic diagram of a filter assembly according to an embodiment of the present invention;
FIG. 8 is an enlarged view of FIG. 7 at D;
FIG. 9 is an enlarged view of FIG. 7 at E;
FIG. 10 is an enlarged view of F in FIG. 9;
FIG. 11 is a schematic view of a receiving ring according to an embodiment of the present invention;
FIG. 12 is an enlarged view at G of FIG. 11;
FIG. 13 is an enlarged view of portion H of FIG. 12;
FIG. 14 is a schematic view showing an internal structure of a receiving ring according to an embodiment of the present invention;
FIG. 15 is an enlarged view of J in FIG. 14;
Fig. 16 is a schematic structural view of a guide slot according to an embodiment of the present invention.
Reference numerals illustrate:
1. A separator; 11. a filter assembly; 111. a first filter housing; 112. a second filter housing; 113. knocking the block; 114. side bars; 115. a support ring; 116. a mounting bar; 117. a connecting strip; 118. a cone; 119. a shaft lever; 12. a receiving ring; 121. a storage groove; 122. a bottom plate; 123. a drive ring; 124. a first pull rope; 125. a plugging ring; 126. a separator bar; 127. briquetting; 128. wedge blocks; 129. a fixing piece; 131. an impeller; 132. a connecting rod; 133. a drive cylinder; 134. a connecting ring; 135. a second pull rope; 136. a pressing ring; 137. a movable plate; 138. a liquid outlet; 139. a synchronization block; 141. an upper sealing plate; 142. a lower sealing plate; 143. a mounting block; 144. a scraper; 145. a driving block; 146. tenon blocks; 147. a guide groove; 148. a mounting ring; 149. a guide ring; 151. an air inlet pipe; 152. an exhaust pipe; 153. an ash discharge pipe.
Detailed Description
In order to make the technical scheme of the present invention better understood by those skilled in the art, the present invention will be further described in detail with reference to the accompanying drawings.
As shown in fig. 1 to 16, a circulating fluidized bed boiler for biofuel includes a separator 1, and the separator 1 is provided with:
The filter assembly 11 comprises a first filter cover 111, a second filter cover 112 and a knocking block 113, wherein the first filter cover 111 and the second filter cover 112 are fixedly arranged on an exhaust pipe 152 of the separator 1, the second filter cover 112 is positioned in the first filter cover 111, the knocking block 113 is movably arranged on the exhaust pipe 152, and the knocking block 113 moves to intermittently collide with the first filter cover 111 and the second filter cover 112 and intermittently open the bottom of the first filter cover 111;
The upper sealing plate 141 is fixedly installed on the ash discharge pipe 153 of the separator 1, the upper sealing plate 141 is rotatably provided with the lower sealing plate 142, and the lower sealing plate 142 rotates relative to the upper sealing plate 141 to intermittently open the ash discharge pipe 153.
Specifically, the separator 1 in the above embodiment is specifically a cyclone separator, the separator 1 is provided with an air inlet pipe 151, an air outlet pipe 152 and an ash discharge pipe 153, the upper sealing plate 141 is provided with notches distributed in a circumferential array, the lower sealing plate 142 is rotatably mounted at the bottom of the upper sealing plate 141 and is adapted to the notches on the upper sealing plate 141, and the top of the upper sealing plate 141 is provided with a cone for guiding plant ash.
Further, in operation, the biofuel burns in the combustion chamber to generate hot gas, the hot gas enters the separator 1 from the air inlet pipe 151 of the separator 1, the hot gas flows downwards along the inner wall of the separator 1 in a spiral manner, the plant ash with larger mass in the hot gas moves downwards under the action of gravity and gradually falls into the ash discharge pipe 153, at this moment, the upper sealing plate 141 and the lower sealing plate 142 in the ash discharge pipe 153 cooperate to seal the ash discharge pipe 153, the hot gas flowing in the separator 1 is prevented from disturbing the air in the ash discharge pipe 153, the hot gas flows upwards from the middle part of the separator 1 after throwing away the plant ash with larger mass, the hot gas passes through the first filter cover 111 and the second filter cover 112, the first filter cover 111 and the second filter cover 112 cooperate to filter the plant ash in the hot gas, meanwhile, the plant ash on the first filter cover 111 and the second filter cover 112 is knocked down by the knocking block 113, the plant ash on the first filter cover 111 and the second filter cover 112 is prevented from blocking the filter holes on the first filter cover 111 and the second filter cover 112, after a period of operation, the bottom of the first filter cover 111 is opened, the plant ash in the first filter cover 111 and the second filter cover 112 is also moved down along the upper sealing plate 141, and the upper sealing plate 141 is further rotated along the upper sealing plate 141.
In the above technical scheme, when the biomass fuel combusts in the combustion chamber to generate hot gas, the hot gas enters the separator 1 from the air inlet pipe 151 of the separator 1, the hot gas flows downwards along the inner wall of the separator 1 in a spiral manner, the plant ash with larger mass in the hot gas moves downwards under the action of gravity and gradually falls into the ash discharge pipe 153, at this time, the upper sealing plate 141 and the lower sealing plate 142 in the ash discharge pipe 153 cooperate to seal the ash discharge pipe 153, the hot gas flowing in the separator 1 is prevented from disturbing the air inside the ash discharge pipe 153, the hot gas flows upwards from the middle part of the separator 1 after throwing away the plant ash with larger mass, the hot gas passes through the first filter cover 111 and the second filter cover 112, the first filter cover 111 and the second filter cover 112 cooperate to filter the plant ash in the hot gas, meanwhile, the knocking block 113 knocks the plant ash on the first filter cover 111 and the second filter cover 112, the filter holes on the first filter cover 111 and the second filter cover 112 are prevented from being blocked, after a period of operation, the first filter cover 111 and the second filter cover 111 are opened, the plant ash in the first filter cover 111 and the second filter cover 112 can be knocked down along the upper sealing plate 141, and the ash discharge hole 141 can be continued to rotate along the upper sealing plate 141.
As a further provided embodiment of the present invention, the second filter housing 112 is rotatably provided with a shaft 119, the shaft 119 is provided with a support ring 115 for supporting the knocking block 113, and the shaft 119 is rotated to make the knocking block 113 collide with the first filter housing 111 and the second filter housing 112.
Specifically, the diameter of the filtering hole of the second filter cover 112 is smaller than that of the first filtering hole, side strips 114 distributed in a circumferential array are arranged on the inner wall of the first filter cover 111 and the outer wall of the second filter cover 112, an installation strip 116 for supporting the knocking block 113 is arranged on the supporting ring 115, and an elastic connecting strip 117 is arranged between the installation strip 116 and the knocking block 113.
Further, in the process that the shaft 119 drives the supporting ring 115 to rotate, the supporting ring 115 drives the knocking block 113 to move through the mounting strip 116, the knocking block 113 abuts against the side strip 114, the supporting ring 115 continues to move, the side strip 114 blocks the knocking block 113, the connecting strip 117 between the knocking block 113 and the mounting strip 116 deforms, the knocking block 113 moves in the direction away from the side strip 114 until the knocking block 113 is thoroughly separated from the side strip 114, the connecting strip 117 is restored to the original state under the action of elasticity of the connecting strip 117 and drives the knocking block 113 to move, the knocking block 113 impacts on the next side strip 114, and accordingly drives the first filter cover 111 and the second filter cover 112 to shake, and plant ash attached to the first filter cover 111 and the second filter cover 112 is shaken off.
As still another embodiment of the present invention, the bottom of the first filter casing 111 is provided with a receiving ring 12, the receiving ring 12 is provided with a receiving groove 121 for receiving plant ash, and the bottom of the receiving ring 12 is movably provided with a bottom plate 122 for blocking the bottom of the receiving groove 121.
Specifically, the storage groove 121 is annular, the middle part of the receiving ring 12 is provided with a cone 118 for guiding plant ash into the storage groove 121, the storage groove 121 comprises an upper part and a lower part, the cross section of the upper part is in an inverted trapezoid shape, and the cross section of the lower part is in a conical shape.
Further, during shaking of the first filter housing 111 and the second filter housing 112, plant ash between the first filter housing 111 and the second filter housing 112 enters the lower portion of the receiving groove 121 along the inclined surface of the upper portion of the cone 118 and the receiving groove 121 under the action of gravity, and when the bottom plate 122 moves relative to the receiving ring 12, the bottom of the receiving groove 121 is opened, and the plant ash inside the receiving groove 121 can return to the inside of the separator 1.
As a further embodiment of the present invention, the pressing ring 136 is movably disposed on the supporting ring 115, and the supporting ring 115 rotates to reciprocate the pressing ring 136 in the vertical direction and press the plant ash inside the receiving groove 121.
Specifically, during the rotation of the supporting ring 115 with the pressing ring 136, the pressing ring 136 gradually moves downward and enters the accommodating groove 121 to seal the top of the accommodating groove 121, at this time, the bottom plate 122 moves to open the bottom of the accommodating groove 121, plant ash in the accommodating groove 121 falls into the separator 1, and gas in the separator 1 cannot pass through the accommodating groove 121 to enter the area between the first filter cover 111 and the second filter cover 112.
As still another embodiment of the present invention, an impeller 131 for driving the shaft 119 to rotate is provided in the exhaust pipe 152, a driving cylinder 133 for driving the extrusion ring 136 to move is movably provided on the impeller 131, and the impeller 131 rotates to reciprocate the driving cylinder 133 in a vertical direction.
Specifically, be provided with connecting rod 132 on the impeller 131, connecting rod 132 is the reciprocating screw rod specifically, offer on the inner wall of actuating cylinder 133 with connecting rod 132 on the bump of spout adaptation, actuating cylinder 133 slidable mounting is on blast pipe 152, the bottom rotation of actuating cylinder 133 is provided with go-between 134 and extrusion ring 136 is provided with second stay cord 135, is provided with from bullet telescopic link between extrusion ring 136 and the carrier ring 115, is provided with the synchronizing block 139 that extends to the axostylus axostyle 119 inside on the connecting rod 132.
Further, the hot air enters the exhaust pipe 152 after being filtered by the first filter housing 111 and the second filter housing 112, and pushes the impeller 131 in the exhaust pipe 152 to rotate, the impeller 131 drives the shaft lever 119 to rotate through the connecting rod 132 and the synchronizing block 139, meanwhile, the sliding chute on the connecting rod 132 pushes the driving barrel 133 to reciprocate in the vertical direction, when the driving barrel 133 moves downwards with the connecting ring 134, the second pull rope 135 between the connecting ring 134 and the extrusion rod is loosened, and the self-elastic telescopic rod between the extrusion ring 136 and the support ring 115 is extended and pushes the extrusion ring 136 to move downwards.
As a further embodiment of the present invention, the receiving ring 12 is provided with a liquid outlet 138 for water to flow out, and the pressing ring 136 moves downward to enlarge the opening of the liquid outlet 138.
Specifically, the interior of the side bar 114 is provided with a liquid flow passage connecting the liquid outlet 138 with the outside.
Further, in the process of moving the extrusion ring 136 downward, the liquid outlet 138 on the receiving ring 12 is gradually increased, the external liquid enters the accommodating groove 121 from the liquid outlet 138, the plant ash in the accommodating groove 121 is wetted, and in the process of moving the extrusion ring 136 into the accommodating groove 121, the wetted plant ash can be pressed together to form a compact block, so that the plant ash between the first filter housing 111 and the second filter housing 112 is returned to the separator 1.
As a further embodiment of the present invention, a set of movable pieces 137 extending inward and a set of movable pieces 137 extending outward are respectively disposed on the inner wall and the outer wall of the extrusion ring 136, and the two sets of movable pieces 137 are staggered in the vertical direction.
Specifically, a spring is provided between the movable piece 137 and the pressing ring 136.
Further, in the process of moving the pressing ring 136 downward, the movable piece 137 on the pressing ring 136 extends from the pressing ring 136 and abuts against the upper inclined surface of the accommodating groove 121, and the pressing ring 136 cooperates with the movable piece 137 to cover more plant ash in the accommodating groove 121, so as to push the plant ash to move downward to the lower part of the accommodating groove 121, so that the pressing ring 136 cooperates with the lower part of the accommodating groove 121 to press the plant ash into blocks.
As a further embodiment of the present invention, the receiving ring 12 is provided with a partition bar 126 for partitioning the receiving groove 121, and the pressing ring 136 moves down to move the partition bar 126 and move the bottom plate 122 after moving to a predetermined position.
In particular, the spacer 126 is embodied as a self-ejecting telescopic rod.
Further, in the process of moving the pressing ring 136 downward, the pressing ring 136 pushes the separating strip 126, the separating strip 126 contracts, and after the separating strip 126 moves to a predetermined position, the bottom plate 122 moves to open the bottom of the accommodating groove 121, so as to discharge plant ash in the accommodating groove 121.
As a further embodiment of the present invention, the receiving ring 12 is provided with a driving ring 123 for driving the bottom plate 122 to move, the separation strip 126 is provided with a blocking ring 125 for blocking the liquid outlet 138, and the blocking ring 125 is provided with a pressing block 127 for pushing the driving ring 123 to rotate.
Specifically, a torsion spring is disposed between the driving ring 123 and the receiving ring 12, a first pull rope 124 is disposed between the driving ring 123 and the bottom plate 122, and a spring is disposed between the bottom plate 122 and the receiving ring 12.
Further, in the process of shrinking the separation strip 126, the separation strip 126 drives the plugging ring 125 to move downwards, so that the liquid outlet 138 is gradually opened, meanwhile, the pressing block 127 on the plugging ring 125 pushes the driving ring 123 to rotate, and the driving ring 123 drives the bottom plate 122 to move through the pull rope, so that the bottom of the storage groove 121 is opened.
As a further embodiment of the present invention, a wedge 128 is provided on the drive ring 123, which cooperates with the press block 127, and an arcuate fixing piece 129 is provided on the drive ring 123 for locking it to the receiving ring 12.
Specifically, the middle part of going up shrouding 141 is provided with installation piece 143, be provided with on the axostylus axostyle 119 and extend to the inside drive piece 145 of installation piece 143, be provided with the scraper blade 144 that is located installation piece 143 top on the axostylus axostyle 119, it is provided with the collar 148 that extends to the inside of installation piece 143 to rotate on the lower shrouding 142, the guide slot 147 has been seted up on the inner wall of collar 148, be provided with on the drive piece 145 with the cylindrical tenon piece 146 of guide slot 147 adaptation, the guide slot 147 includes upper horizontal part, lower horizontal part and two slope parts of connecting upper horizontal part and lower horizontal part, rotate on the collar 148 and be provided with guide ring 149, be provided with the screw thread arch of installation piece 143 inner wall adaptation on the guide ring 149, be provided with the telescopic link between guide ring 149 and the lower shrouding 142.
Further, in operation, the biofuel burns in the combustion chamber to generate hot gas, the hot gas enters the separator 1 from the air inlet pipe 151 of the separator 1, the hot gas flows downwards along the inner wall of the separator 1 in a spiral manner, the plant ash with larger mass in the hot gas moves downwards under the action of gravity and gradually falls into the ash discharge pipe 153, at this time, the upper sealing plate 141 and the lower sealing plate 142 in the ash discharge pipe 153 cooperate to seal the ash discharge pipe 153, the hot gas flowing in the separator 1 is prevented from disturbing the air in the ash discharge pipe 153, the hot gas flows upwards from the middle part of the separator 1 after the plant ash with larger mass is thrown away, the hot gas passes through the first filter cover 111 and the second filter cover 112 to enter the exhaust pipe 152 and is discharged from the exhaust pipe 152, and the first filter cover 111 and the second filter cover 112 cooperate to filter the plant ash in the hot gas.
When the hot air flows through the exhaust pipe 152, the impeller 131 can be pushed to rotate, the shaft rod 119 and the supporting ring 115 are driven to rotate by the impeller 131 through the connecting rod 132 and the synchronizing block 139, the supporting ring 115 drives the knocking block 113 to move through the mounting bar 116, the knocking block 113 abuts against the side bar 114, the supporting ring 115 continues to move, the side bar 114 blocks the knocking block 113, the connecting bar 117 between the knocking block 113 and the mounting bar 116 deforms, the knocking block 113 moves in a direction away from the side bar 114 until the knocking block 113 and the side bar 114 are thoroughly separated, the connecting bar 117 is restored to the original state under the action of elasticity of the connecting bar 117 and drives the knocking block 113 to move, the knocking block 113 impacts on the next side bar 114 and drives the first filter cover 111 and the second filter cover 112 to shake, and plant ash attached to the first filter cover 111 and the second filter cover 112 can be shaken off under the action of gravity along the cone 118 and the upper inclined surface of the storage groove 121, and the plant ash between the first filter cover 111 and the second filter cover 112 enters the lower part of the storage groove 121.
In the process of rotating the connecting rod 132, the sliding chute on the connecting rod 132 pushes the driving barrel 133 to reciprocate in the vertical direction, when the driving barrel 133 moves downwards with the connecting ring 134, the second pull rope 135 between the connecting ring 134 and the extrusion rod is loosened, the self-elastic telescopic rod between the extrusion ring 136 and the supporting ring 115 stretches and pushes the extrusion ring 136 to move downwards, at the moment, the movable piece 137 stretches out from the extrusion ring 136 and abuts against the upper inclined surface of the containing groove 121, the extrusion ring 136 cooperates with the movable piece 137 to cover more plant ash in the containing groove 121, then pushes the plant ash to move downwards to the lower part of the containing groove 121, the extrusion ring 136 pushes the separation strip 126, the separation strip 126 is compressed to drive the plugging ring 125 to move downwards, the liquid outlet 138 on the supporting ring 12 is gradually increased, external liquid enters the containing groove 121 from the liquid outlet 138, wetting plant ash in the accommodating groove 121, pressing the wet plant ash together to form a compact block by the extrusion ring 136 matching with the lower part of the accommodating groove 121, simultaneously abutting the pressing block 127 on the plugging ring 125 on the inclined surface of the wedge block 128 on the driving ring 123, fixing the driving ring 123 on the receiving ring 12 by the arc-shaped fixing piece 129, continuously compressing the pressing block 127 until the plant ash is extruded into blocks, preventing the fixing piece 129 from continuously bearing pressure to deform, stretching the pressing block 127 and moving along the inclined surface of the wedge block 128, pushing the wedge block 128 to rotate with the driving ring 123, pulling the bottom plate 122 to move by the driving ring 123 through the first pull rope 124, opening the bottom of the accommodating groove 121, extruding the plant ash blocks inside the accommodating groove 121 to fall into the separator 1, and falling into the ash discharging pipe 153 under the action of gravity;
Then the driving cylinder 133 moves upwards, the second pull rope 135 tightens, the extrusion ring 136 moves upwards in a rotating way, the bottom plate 122, the driving ring 123 and the sealing ring are reset gradually, the separation strip 126 stretches and pushes against the bottom surface of the extrusion ring 136, and plant ash attached to the bottom surface of the extrusion ring 136 is scraped.
In the process of rotating the shaft lever 119, the shaft lever 119 drives the driving block 145 to move, the cylindrical tenon block 146 on the driving block 145 moves along the guide groove 147 on the inner wall of the mounting block 148, when the tenon block 146 moves along the upper horizontal part of the guide groove 147, the upper sealing plate 141 cooperates with the lower sealing plate 142 to seal the ash discharge pipe 153, when the driving block 145 enters the lower horizontal part along the inclined part of the guide groove 147, the tenon block 146 pushes the mounting block 148 to move downwards with the guide ring 149, the threaded boss on the guide ring 149 moves along the sliding groove on the inner wall of the mounting block 143 to push the lower sealing plate 142 to rotate relative to the upper sealing plate 141, the plant ash in the ash discharge pipe 153 can continue to move along the ash discharge pipe 153 through the notch on the upper sealing plate 141, and the plant ash extruded into the block can be pressed to move, so that the loose plant ash is prevented from bridging at the top of the upper sealing plate 141, the tenon block 146 is ensured to move smoothly by the other inclined part to return to the upper horizontal part, and the mounting block 148 moves upwards to drive the lower sealing plate 142 to rotate reversely, so that the upper sealing plate 141 is prevented from interfering with the air 153 flowing in the separator 1.
While certain exemplary embodiments of the present invention have been described above by way of illustration only, it will be apparent to those of ordinary skill in the art that modifications may be made to the described embodiments in various different ways without departing from the spirit and scope of the invention. Accordingly, the drawings and description are to be regarded as illustrative in nature and not as restrictive of the scope of the invention, which is defined by the appended claims.
Claims (10)
1. A circulating fluidized bed boiler for biofuel, comprising a separator, wherein the separator is provided with:
The filter assembly comprises a first filter cover, a second filter cover and a knocking block, wherein the first filter cover and the second filter cover are fixedly arranged on an exhaust pipe of the separator, the second filter cover is positioned in the first filter cover, the knocking block is movably arranged on the exhaust pipe, and the knocking block moves to intermittently collide the first filter cover and the second filter cover and intermittently open the bottom of the first filter cover;
The upper sealing plate is fixedly arranged on the ash discharge pipe of the separator, a lower sealing plate is rotatably arranged on the upper sealing plate, and the lower sealing plate rotates relative to the upper sealing plate so that the ash discharge pipe is intermittently opened.
2. The circulating fluidized bed boiler of claim 1, wherein the second filter housing is rotatably provided with a shaft, and a support ring for supporting the knocking block is provided on the shaft, and the shaft rotates to allow the knocking block to collide with the first filter housing and the second filter housing.
3. The circulating fluidized bed boiler of claim 2, wherein the bottom of the first filter mantle is provided with a receiving ring, the receiving ring is provided with a receiving groove for receiving plant ash, and the bottom of the receiving ring is movably provided with a bottom plate for blocking the bottom of the receiving groove.
4. A circulating fluidized bed boiler for biofuels according to claim 3, wherein the supporting ring is movably provided with a pressing ring, and the supporting ring rotates to reciprocate the pressing ring in a vertical direction and press plant ash inside the receiving groove.
5. The circulating fluidized bed boiler of claim 4, wherein an impeller for driving the shaft rod to rotate is arranged in the exhaust pipe, a driving cylinder for driving the extrusion ring to move is movably arranged on the impeller, and the impeller rotates to enable the driving cylinder to reciprocate in the vertical direction.
6. The circulating fluidized bed boiler of claim 4, wherein the receiving ring is provided with a liquid outlet for water to flow out, and the extruding ring moves downwards to enlarge the liquid outlet opening.
7. The circulating fluidized bed boiler of claim 4, wherein a group of movable sheets extending inwards and a group of movable sheets extending outwards are respectively arranged on the inner wall and the outer wall of the extrusion ring, and the two groups of movable sheets are staggered in the vertical direction.
8. The circulating fluidized bed boiler of claim 6, wherein the receiving ring is provided with a dividing bar for dividing the receiving groove, and the pressing ring moves down to move the dividing bar and move the bottom plate after moving to a predetermined position.
9. The circulating fluidized bed boiler of claim 8, wherein the receiving ring is provided with a driving ring for driving the bottom plate to move, the separation strip is provided with a blocking ring for blocking the liquid outlet, and the blocking ring is provided with a pressing block for pushing the driving ring to rotate.
10. The circulating fluidized bed boiler of claim 9, wherein the driving ring is provided with a wedge block matched with the pressing block, and the driving ring is provided with an arc-shaped fixing piece for locking the driving ring on the receiving ring.
Priority Applications (1)
| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410682952.XA CN118391667A (en) | 2024-05-30 | 2024-05-30 | Circulating fluidized bed boiler for biological fuel |
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| Application Number | Priority Date | Filing Date | Title |
|---|---|---|---|
| CN202410682952.XA CN118391667A (en) | 2024-05-30 | 2024-05-30 | Circulating fluidized bed boiler for biological fuel |
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| CN118391667A true CN118391667A (en) | 2024-07-26 |
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| CN202410682952.XA Pending CN118391667A (en) | 2024-05-30 | 2024-05-30 | Circulating fluidized bed boiler for biological fuel |
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| CN203341656U (en) * | 2013-04-10 | 2013-12-18 | 江苏美的春花电器股份有限公司 | Dust squeezing assembly and dust collector with same |
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